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-rw-r--r--src/Haddock/Backends/Xhtml.hs7
-rw-r--r--src/Haddock/Backends/Xhtml/Utils.hs5
2 files changed, 10 insertions, 2 deletions
diff --git a/src/Haddock/Backends/Xhtml.hs b/src/Haddock/Backends/Xhtml.hs
index 9259ae61..71a96bf9 100644
--- a/src/Haddock/Backends/Xhtml.hs
+++ b/src/Haddock/Backends/Xhtml.hs
@@ -591,7 +591,8 @@ ppModuleContents exports
| lev <= n = ( [], items )
| otherwise = ( html:secs, rest2 )
where
- html = linkedAnchor id0 << docToHtml doc +++ mk_subsections ssecs
+ html = linkedAnchor (groupId id0)
+ << docToHtml doc +++ mk_subsections ssecs
(ssecs, rest1) = process lev rest
(secs, rest2) = process n rest1
process n (_ : rest) = process n rest
@@ -614,7 +615,7 @@ numberSectionHeadings exports = go 1 exports
processExport :: Bool -> LinksInfo -> Bool -> (ExportItem DocName) -> Maybe Html
processExport summary _ _ (ExportGroup lev id0 doc)
- = nothingIf summary $ groupTag lev ! [identifier id0] << docToHtml doc
+ = nothingIf summary $ groupHeading lev id0 << docToHtml doc
processExport summary links unicode (ExportDecl decl doc subdocs insts)
= processDecl summary $ ppDecl summary links decl doc insts subdocs unicode
processExport summary _ _ (ExportNoDecl y [])
@@ -641,6 +642,8 @@ processDeclOneLiner :: Bool -> Html -> Maybe Html
processDeclOneLiner True = Just
processDeclOneLiner False = Just . divTopDecl . declElem
+groupHeading :: Int -> String -> Html -> Html
+groupHeading lev id0 = groupTag lev ! [identifier (groupId id0)]
groupTag :: Int -> Html -> Html
groupTag lev
diff --git a/src/Haddock/Backends/Xhtml/Utils.hs b/src/Haddock/Backends/Xhtml/Utils.hs
index 10f9e766..f0b6941c 100644
--- a/src/Haddock/Backends/Xhtml/Utils.hs
+++ b/src/Haddock/Backends/Xhtml/Utils.hs
@@ -15,6 +15,7 @@ module Haddock.Backends.Xhtml.Utils (
namedAnchor, linkedAnchor,
spliceURL,
+ groupId,
(<+>), char, nonEmpty,
keyword, punctuate,
@@ -172,6 +173,10 @@ linkedAnchor :: String -> Html -> Html
linkedAnchor n = anchor ! [href ('#':n)]
+-- | generate an anchor identifier for a group
+groupId :: String -> String
+groupId g = makeAnchorId ("g:" ++ g)
+
--
-- A section of HTML which is collapsible.
--